Conveyer.



PATENTED APR, 28, 1903. J" HARMQN. GONVEYBR.

APPLICATION FILED NOV. 15, 1902.

N0 MODEL.

Witnesses iiniirn o I @TAlPlES JOHN IIARMON, OF CHICAGO, ILLINOIS.

CONVEYER.

5EECIFICATION forming part of Letters Patent No. 726,286, dated April28, 1903. Application filed November 15, 1902. erial No. 131.552. (Nomodel.)

To (ML whom it may concern:

Be it known that I, JOHN HARMON, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Gonveyers; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanyingdrawings, and to the figures of reference marked thereon,which form a part of this specification.

This invention relates particularly to an apparatus for raising buildingmaterials during the construction of buildings; and the object of theinvention is to form an improved device which may be adjusted at variousheights to deliver the bricks and mortar accordingly.

It includes a stationary frame and a vertically movable extensionthereon, together with an endless chain and buckets to'carry up thematerial.

In the accompanying drawings, Figure l is a side elevation of theapparatus. Fig. 2 is a front elevation thereof.

Referring specifically to the drawings, 6 indicates vertical timbers,and 7 inclined timbers rising from a base-frame 8 and joined at the top,forming the fixed frame or tower.

The timbers are suitably braced and joined.

The conveyor comprises a pair of endless chains 9, which pass oversprockets 10 on a shaft 10 at the bottom of the inclined timbers of thetower- The shaft is geared up to a crank llto operate the conveyor. Thechains carry buckets 9, suitable for brick and mortar, and these bucketsslide on Ways or guides formed of a pair of rails 12, supported bycross-pieces 12 between the chains. The purpose of the guides is toprevent sag of the loaded chains.

To vary the height of the tower, an extension is used, comprisingtimbers 13, which slide against the vertical timbers 6 within keepers 6.These timbers are raised and lowered by pinions 14: on crank-shaft 14.at the top of the tower, which engage racks 13 on the inside of thetimbers 13. The racks hinged thereto, into which the material is vdumped from the buckets and which may conveniently be entered into awindow or other opening in a wall or allowed to project over a wallbeing built. The extension-timbers 13 have at the top a shaft 16, withsprockets 16, around which the chains pass, and the vertical frames (3of the fixed tower have near the top thereof a-similar shaft andsprockets 6, ove which the chains pass in their downward run.

The guides and chains are formed in sections or pieces and may belengthened or shortened by adding or removing sections, as desired. Thecross-pieces 12 can be shifted to bring the guides to the properinclination, according to the inclination of the upward run of thechains produced by raising or lowering the extensions, and for thelowest height the conveyor-chains may be taken off the top sprockets 16and run around the sprockets (3 only.

It will be understood that the adjustment does not have to be changedvery oftensay a change for every story of the building. In operation theconveyor is stood up beside a building and put to use in a mannerevident from the above description. The chute is hinged, as stated,.andhung by ropes 15, whereby its inclination may be varied.

The reason for having the three sets of sprocket-wheels at respectivelythe top and bottom of the tower and the top of the extension is to givethe chains a triangular run, so that the descending buckets will notinterfere with the top ofthe fixed tower, as they would if the chainswere bent over the lower sprocket-s at the foot of the tower and thesprockets at the top of the extension only.

What I claim is 1. A conveyor comprising a stationary frame havingbelt-wheels at the top and bottom thereof, and a movable frame, havingbelt-Wheels at the top thereof, extensible versaid sprockets, having atriangular run, sub- [0 tically from the top of the stationary frame,stantially as described. and endless conveyer-chains passing around Intestimony whereof I affix my signature said wheels, substantially asdescribed. in presence of two Witnesses. 5 2. The combination with thestationary inclined frame having sprockets at top and bot- JOHN HARMON'tom, and the vertical frame extensible there- Witnesses: from, havingsprockets and achute at the top, NELLIE FELTSKOG, of the endlesscarrier-chains passing around H. G. BATCHELOR.

